MySQL

MyISAM and InnoDB explanation InnoDB and MyISAM are the two most common table types used by many people when using MySQL, both of which have pros and cons, depending on the application. The basic difference is that the MyISAM type does not support

Close Order Stored ProcedureBegindeclare done int default 0;DECLARE OrderID varchar (22);#声明查询订单的游标Declare cur cursor FOR select orders.order_id from orders where orders.order_state = ' wait_pay ';#异常处理Declare continue handler for SQLState ' 02000 '

The basic syntax to turn on MySQL is Grant authorization, which is generally not a problem, mainly after the open may still not connectGRANT All Privileges onLibrary name. Table Name toUser name @'IP Address'Identified by 'Password' with GRANT

Original link: http://blog.csdn.net/pengone/article/details/50035889Apache:If using RPM package installation, the installation path should be in the/ETC/HTTPD directory Apache configuration file:/etc/httpd/conf/httpd.conf Apache module

Tar xvf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz -c /usr/local/cd /usr/local/mv  mysql-5.7.18-linux-glibc2.5-x86_64/ mysqlgroupadd -u 800 mysqlgroupadd -g  800 mysqluseradd -u 800 -g mysql mysqlmkdir mysql/datachown -r  mysql.mysql mysqlcd mysqlbin/

SummaryIn this blog post. The author will start from the foundation. Describes the installation and basic use commands for MySQL in Linux, only for people who have just started learning from MySQL. Daniel, please take a detour ...Installing the

To create a database:CREATE DATABASE stefan;To delete a database:DROP DATABASE stefan;To rename a database:There is no direct way to rename a database.Methods that are no longer used:RENAME DATABASE stefan TO LCDB;To create a table syntax:CREATE

In a single query, MySQL can use only one index. In a real project, a WHERE clause in an SQL statement typically contains multiple query conditions and is sorted, grouped, and so on. Too many indexes in the table can affect insert and update

The use of memory in MySQL can be divided into two categories, one is not configured by configuration parameters, such as the MySQL server running, parsing, querying and internal management of the memory consumption, and other types of memory such

Database basic additions and deletions to change1. Increase - Add / Insert data,insert intoInsert which table, those columns, what values,statement:INSERT into table name (column 1, column 2, column 3)values ( value 1, value 2, value 3);Can not

Self-study for a period of time Java, these days to see some interview topics, just to take the previous MySQL database to turn over.Query Statement Writing order: Select–from-where-group By-having-order by-limit Query Statement execution order:

The previous article basically summarizes the next myql how to create a user by instruction. See: "Mysql" often uses instructions-user actions (create, authorize, change. DeleteToday, the special situation, forget password How to do???Re-installed.

Get information about databases and tablesNormally a normal programmer or DBA would suddenly think of a series of questions when they hit the code: Who am I? What am I doing here? Where's my database? What about my watch? How do I create a table?

Mysql-cluster free Compilation package Download: https://dev.mysql.com/downloads/file/?id=469881wget https://cdn.mysql.com//Downloads/MySQL-Cluster-7.5/mysql-cluster-gpl-7.5.6-linux-glibc2.5-x86_64.tar.gzExtract:# tar XVF

In spring, a sample of the MySQL database was added and hacked, very easy.File structureMAVEN's Pom.xml file, which contains several very important jar packages 4.0.0 MySpring myspring 0.0.1-SNAPSHOT MySpring myspring org.spring Framework

There are two ways to install MySQL: 1 for the official Download DMG installation package. 2 Install for use with brew.Installation steps:First, the official download DMG installation package for installation1. Download the

MySQL Version: 5.6ip:192.168.134.178 of the primary serverip:192.168.134.180 from the serverNow the master-slave machine installed MySQL version 5.6, the installation process is omitted;1 Modify the MySQL configuration file for the master server:#vi/

Originally Linux under the default is the table name is case-sensitive, with the following settings, you can let MySQL is not distinguished table name casing:1, log in with root, modify/etc/my.cnf;2. Add a line under the [MYSQLD] node:

First, configure the MySQL database1, unzip the green version of MySQL, and renamed to mysql5.7, such asCompare the previous version of 5.6 with less data directory (storage) and My-default.ini files (configuration information)Second, installation

================================ installation Version =======================================The MySQL installation version requires the following two software:Tip: For. NET 4 framework-related, install the-->net4_ framework first. rarTip: Microsoft